Device for forming eyes on springs.



F.1'. KITOWSKh DEVICE'FOR FORMING EYES 0N SPRINGS. APPLICATION FILED AUG.2, 1917.

Patented Jan. 1,1918.

lNl/E/VTUR F K ifowskl A TTOR/VE Y8 F. J. KITOWSKL DEVICE FOR FORMING ms 0N SPRINGS.

APPLICAHON FILED AUG.2. I917- L25Ql23- Patented Jan. 1,-1918.

Z SHEETS-SHEJIT 2.

WITNESSES '7 16 15 V nvmvzon 13 FJ K I+OW5KL MAMM A TTOBWEYS' UNITED sr s FERDINAND J. KITOWSKI, OF. ST. GLO UD, MINNESOTA.

DEVICE FOR FOR1VIING EYES ONSPRINGS.

Application filed August 2, 1917. Serial No. 184,086.

resident of St. Cloud, in the county of Stearns and State-of Minnesota, have invented a new and Improved Device for Forming Eyes OnSprings, of which the fol- V lowing is-a full, clear, andexact description.

My invention is more. particularly intended-for embodimentin a device for forming eyes on the springs of automobiles and other vehicles, although capable of forming eyes on articles other-than springs.

An important object of my invention is to provide aneye-forming device of simple construction and easy of operation, and adapted to form eyes of different size or. characteron springs or the like.

The invention'also' has for its object to provide an eye-forming device improved in various particulars with respect to strength andefliciency and with a View to promote convenience and despatch in the positioning of the Work, the forming of the eye, and the removal of the finished work;

An important object also is to promote despatch and simplicity in the adjustment of the deviceto produce eyes of varying. character.

The'nature oftheinvention and its ad vantages will-clearly appear from the specific description following. 1

-Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views, it being understood that the drawings are merely illustrative ofone example of the invention.

Figure l'isia planview of 'aneye-forming device embodying my invention, parts being broken out;

Fig: 2 is a partly sectional plan view Fig. 3 is a side elevation partly in section as indicated by the irregular *line '33, Fig. 1;

Fig. 4 is an end view;

Fig. 5 is aperspective view of the main. frame with the hinge arm thereon omitted.

Fig. 6 is a transverse vertical section on the line 6-6, Fig. 3;

Fig. 7 is a perspective view of the base plate of a form that may be employed when the device is to be clamped in a vise.

In carrying out my invention in accordance with. the illustratedexample a suitable base 10 is provided, here shown as consisting of a fiat' plate. The plate may be se cured to a supporting structure in any suitable manner, there being indicated a cleat or flange 11 to secure the base in a vise. The main frame designated generally by the numeral 12 is swingably mounted on the base 10, said frame in the preferred form of the invention being generally of U-shape presenting upper and lower arms of different length. Connection between the frame 12' and the base 10 is preferably established by a threaded stud or fixed pin 13 depending from the bottom member orlower arm of the frame 12 near the free end thereof, and extending through a vertical hole 14 in the base 10, the said stud receiving a nut 15 and washer 16 at the under side of the base.

On the upper shorter arm 17 of the frame 12 is a vertically swinging arm or elongated member 18 constituting a swingable member of the frame, said arm being secured by suitable hinge means such as a transverse pin 19' extending through a fork or ears 18 on the arm and through a pin hole 19 in an enlargement .17 on the arm 17. The outer end 18 of said arm constitutes a handle. In the swingable member 18 is a vertical hole 20, there being an alined hole 21 in the lower arm of the frame 12, said hole receiving and constituting bearings for the reduced ends 22, 23 of a former pin 24, and in the illustrated example of my invention which is the preferred form, the pin 24 is turnable, giving it the effect of a mandrel, the reduced ends 22, 23 constituting gudgeons turnable inthe holes 20, 21 as bearings.

The swingable arm 18 permits of the ready placing andremoval of the formerpin 24. In order to firmly hold the arm 18 as to constitute a rigid part of the frame 12, latch means are provided which preferably consist of a vertical, spring-pressed latch 25 pivoted near its lower end as by a' pin 26 between'ears 27 rigid with the said arm 18. The numeral 29 indicates a spring formed by a strip of metal bearing near its upper end against a side of the latch 25 and secured at its lower end to the arm 18 by screws 30 or the like. The lower end of the latch below the pivot thereof is inturned as at 31 to effect a latching engagement to hold the arm 18 rigid.

The engagement of the latch is not directly with the arm 17 in the illustrated form of the invention, but is withanadjustable yoke 32 which has upper and'lower side flanges 33 overlapping the upper and lower arms of the frame ,12 to have guided movement on the latter. To adjust the yoke 32 on the frame 12 a threaded spindle 34 is provided which extends at its forward end through 'azhole 35 in :the upright member 36 of the yoke 32 and is swiveled to said upright member in any suitable manner as by means, of collars 37 at opposite sidesof said member, the collars being held by transverse pins 38 Said spindle 34 is turnable inagthreaded hole 39 formed in the upright member 40 of they frame 12, there bein a boss 40 on the said frame through which the threaded hole 39 is formed. A suitable handle 41 is provided on the spindle 34- and by a turning of the spindle the a clamping and forminglever 43 which is fulcrumed bya vertical pin 44. The end 45 of the lever 43'beyond the fulcrum pin is adapted to clamp an endof a spring A orthe like between the said lever and the former pin 24 as clearly indicated, in Figs.

land 2. The said spring A is positioned against a thrust plate 46 which is pivoted at one end onv the base 10 as by a pin 47,

. the free end ofsaid plate 46 lying adjacent tothe pin 24. The plate .46 may be adjusted by .a set screw 48 turning in a fixed standard 49 on the base 10 to vary the angular position of the spring.

'-With the described construction the spring 7 A having been positioned as indicated in Fig. 2 with its end extending beyond the thrustplate 46 to lie against a side of the,

pin 24 tangential to the latter, the lever 43 isgivenaslight movement on its fulcrum Copies of this patent may be obtained for five cents each, by addressing'it Washington, D. 0.

pin 44 to bring the head-45 into clamping engagement with the spring adjacent to the end thereof, thus firmly gripping the spring between said lever-and the forming pin or mandrel 24. With the spring thus firmly engaged by the lever 43 the operator, still holding the lever-43, employsthe same as a handle to swing said lever and the; com-4 plete-framei12 with the spindle 34 through approximately 270 or to the position indi- V about the '-axis of its pivot pin or 'fstudi 13 which is coaxial with the pin 24 and thereby in the swinging of the frame, the

end of the spring isbent about the said pim Pins of various sizes or ofdifferentgcross sections may be employed to produce eyes; of different character.; In'changing the pin 24. the yoke 32 may be adjusted to bodily move the lever 43 and itsfulcrum 44 to conform to the 3 former pin24 being employed; I wish to state ,in conclusion that although the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictlyto the.mechanical de-v tails hereinillustrated, since manifestly the, same can be considerably variedwithout departure from the spirit ofthe invention as defined in the appended claim.

' aving thus described my invention-I" claimvas new,,and desire to secure by Letters Patent: v

. An eye-forming devlce ncluding a sw1ngable frame presenting a shorter, and a longer. :;3

arm, said arms beingin rigidrelation and.

spaced from each other, a -hinged extension member on the said shorter arm, a forming pin engaged at one of its endsby the said hinged extension member s and engaged atits opposite end vwiththe; longer. arm of the frame, a yoke having sliding zengagement,

withthe saidshorter and longerarms, a forming lever fulcrumed on the said slidable yoke and adapted'to cooperatewith the said formingpin, a latch carried by said hmged extenslon memberto sw1ng-therewith, said latch beingpivoted'on said extension member to swing transversely to the plane of swinging of thev said extensionmember, and a spring mounted on the extension member to bear agamst said latch and adapted to move the same into latchingf engagement with the said yoke when the extension member is positioned parallel with the longer arm of the frame.

a FERDINAND J. ,xirowsxr.

he Gommissioner of Patents, 

